Fridge on 12v drains battery overnight???

[DECelt]

So this has been bubbling along for a while. I added a battery disconnect and solar trickle charge to my system and thought all was good.
Late yesterday I connected my battery to run the fridge on 12v. The battery was fully charged. This morning we went to load the fridge. It was cold, but the battery was dead.

I'm going to start troubleshooting, but curious what the parasitic drain should be?

Also...is it unreasonable to ask a battery to run the fridge for 12 hours.

I've never had this issue so not quite sure where to look first...other than to test the drain at the battery?


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[NB Canada]

Is this a 12v compressor fridge or a 2 way gas/electric?


2021 Imagine 2400 BH
2018 GMC Sierra 4x4 crew

[DECelt]

Is this a 12v compressor fridge or a 2 way gas/electric?


2021 Imagine 2400 BH
2018 GMC Sierra 4x4 crew

Sorry...this is a standard Norcold 2118 RV fridge, do running on gas with 12 volt.

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[webpilot]

Sorry...this is a standard Norcold 2118 RV fridge, do running on gas with 12 volt.

My experience with a Norcold 2118 and two 12 v batteries. My frige would absolutely run the batteries down overnight if they were not fully topped off before starting the frige on Propane. My BMV712 showed that it took about 60+ AH to power the rig with the frige and parasitic draws over a 24 hour period. That is more than a normal 12 v battery can handle. Two should have been able to handle it, but would not so I replaced with two Lion Energy 100AH LifeP04 batteries. I did discover when I was changing the batteries that one of the parallel cables was bad so in essense I only had ony battery working. YMMV.

Regards,
George

[TheRealRoland]

When i run the fridge i run it on gas, so it uses just a little electricity. probably to power the fans in case of getting rid of the warm air into the exhaust, the light inside the fridge. I have never ran it just on batteries alone, even though it's an option on the Dometic in the 2610ML. When primary is set to propane, it uses very little electricity.

[NB Canada]

I would say your battery is bad
Just because it shows a full charge doesn’t mean it is any good
Should be able to run the fridge longer than that imo


2021 Imagine 2400 BH
2018 GMC Sierra 4x4 crew

[DECelt]

I would say your battery is bad
Just because it shows a full charge doesn’t mean it is any good
Should be able to run the fridge longer than that imo


2021 Imagine 2400 BH
2018 GMC Sierra 4x4 crew

Battery is new replacement and is good. They replaced the first battery even though it tested good.

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[jdmeer]

Running 100% of the time (unlikely) for 12 hours at the 2.75 amps listed above would drain 33 amp hours. I would think most any RV battery should be able to handle that provided there aren't any other loads.

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[DECelt]

Running 100% of the time (unlikely) for 12 hours at the 2.75 amps listed above would drain 33 amp hours. I would think most any RV battery should be able to handle that provided there aren't any other loads.

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Me too. I'm going to measure parasitic drain and try to figure it out this week. It's irritating.

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[Jims94vmx]

If running of inverter that ends up being over 30a an hour. If on gas battery should easily do that.